Sodium Acid Pyrophosphate is a white monoclinic crystal powder. Its relative density is 1.86. It is soluble in water, insoluble in alcohol. It hydrolyzes to orthophosphate when heated in acid medium. It is hygroscopic, forms hexahydrate in damp air, and decomposes to metaphosphate at above 220℃.

Sodium Acid Pyrophosphate

  • Content (as counted by Na2H2P2O7) ≥% 93.0-100.5
    Water Insoluble ≤ % 1.0
    pH (1% aqueous solution) 3.5-4.5
    Arsenic (As), % ≤ 0.0003
    Heavy Metals (as Pb), % ≤ 0.001
    Fluoride (F), % ≤ 0.005
    Pb % ≤ 0.0002

     

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